001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one
003 *  or more contributor license agreements.  See the NOTICE file
004 *  distributed with this work for additional information
005 *  regarding copyright ownership.  The ASF licenses this file
006 *  to you under the Apache License, Version 2.0 (the
007 *  "License"); you may not use this file except in compliance
008 *  with the License.  You may obtain a copy of the License at
009 *
010 *    http://www.apache.org/licenses/LICENSE-2.0
011 *
012 *  Unless required by applicable law or agreed to in writing,
013 *  software distributed under the License is distributed on an
014 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *  KIND, either express or implied.  See the License for the
016 *  specific language governing permissions and limitations
017 *  under the License.
018 *
019 */
020package org.apache.directory.shared.kerberos.codec.etypeInfo2Entry.actions;
021
022
023import org.apache.directory.api.asn1.DecoderException;
024import org.apache.directory.api.asn1.ber.grammar.GrammarAction;
025import org.apache.directory.api.asn1.ber.tlv.BerValue;
026import org.apache.directory.api.asn1.ber.tlv.TLV;
027import org.apache.directory.api.util.Strings;
028import org.apache.directory.shared.kerberos.codec.etypeInfo2Entry.ETypeInfo2EntryContainer;
029import org.apache.directory.shared.kerberos.components.ETypeInfo2Entry;
030import org.slf4j.Logger;
031import org.slf4j.LoggerFactory;
032
033
034/**
035 * The action used to store the ETYPE-INFO2-ENTRY cipher
036 *
037 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
038 */
039public class StoreSalt extends GrammarAction<ETypeInfo2EntryContainer>
040{
041    /** The logger */
042    private static final Logger LOG = LoggerFactory.getLogger( StoreSalt.class );
043
044    /** Speedup for logs */
045    private static final boolean IS_DEBUG = LOG.isDebugEnabled();
046
047
048    /**
049     * Instantiates a new StoreSalt action.
050     */
051    public StoreSalt()
052    {
053        super( "ETYPE-INFO2-ENTRY salt" );
054    }
055
056
057    /**
058     * {@inheritDoc}
059     */
060    public void action( ETypeInfo2EntryContainer eTypeInfo2EntryContainer )
061    {
062        TLV tlv = eTypeInfo2EntryContainer.getCurrentTLV();
063        ETypeInfo2Entry etypeInfo2Entry = eTypeInfo2EntryContainer.getETypeInfo2Entry();
064
065        // The Length may be null
066        if ( tlv.getLength() != 0 )
067        {
068            BerValue value = tlv.getValue();
069
070            // The encrypted data may be null
071            if ( value.getData() != null )
072            {
073                String salt = Strings.utf8ToString( value.getData() );
074                etypeInfo2Entry.setSalt( salt );
075            }
076        }
077
078        if ( IS_DEBUG )
079        {
080            LOG.debug( "salt : {}", etypeInfo2Entry.getSalt() );
081        }
082
083        // We can end here
084        eTypeInfo2EntryContainer.setGrammarEndAllowed( true );
085    }
086}